Anecdotally, the Thursday night 7pm showing where I'm at had almost no small children (maybe 5% at the most). It seems like a movie that children can definitely watch (unless the child is sensitive to some dramatic scenes). But, I'm thinking the main audience here would be the same audience you'd expect if you saw the musical live.
Just responding to the narrative (elsewhere on these forums) that this is a children's film ("Universal's Frozen"). I'm curious for anyone who has watched Wicked For Good in the theaters, are you seeing mostly families with small children or mostly older audiences (e.g. ages 13+)?